Intel DH61SA English Product Guide - Page 21

Hardware Support, Power Connectors, Fan Headers, LAN Wake Capabilities

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Desktop Board Features Hardware Support Power Connectors ATX12V-compliant power supplies can turn off the computer power through system control. When an ACPI-enabled computer receives the correct command, the power supply removes all non-standby voltages. When resuming from an AC power failure, the computer returns to the power state it was in before power was interrupted (either on or off). The computer's response can be set by using the Last Power State feature in the BIOS Setup program's Boot menu. The Desktop Board has two power connectors. See Figure 19 on page 48 for the location of the power connectors. Fan Headers The function/operation of the fans is as follows: • The fans are on when the board is in the ACPI S0 state. • The fans are off when the computer is in the ACPI S3, S4, or S5 state. • Each fan header is wired to a tachometer input. • All fan headers support closed-loop fan control that can adjust the fan speed or switch the fan on or off as needed. • All fan headers have a +12 V DC connection. • All fan headers are controlled by Pulse Width Modulation. • The rear chassis fan header supports Linear Fan Control on 3-wire fans. The Desktop Board has a 4-pin processor fan header and a 4-pin chassis fan header that is compatible with 4-wire and 3-wire chassis fans. LAN Wake Capabilities CAUTION For LAN wake capabilities, the 5 V standby line for the power supply must be capable of delivering adequate +5 V standby current. Failure to provide adequate standby current when using this feature can damage the power supply. LAN wakeup capabilities enable remote wake-up of the computer through a network. The LAN subsystem monitors network traffic and upon detecting a Magic Packet* frame, it asserts a wake-up signal that powers up the computer. 21

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Desktop Board Features
21
Hardware Support
Power Connectors
ATX12V-compliant power supplies can turn off the computer power through system
control.
When an ACPI-enabled computer receives the correct command, the power
supply removes all non-standby voltages.
When resuming from an AC power failure, the computer returns to the power state it
was in before power was interrupted (either on or off).
The computer’s response can
be set by using the Last Power State feature in the BIOS Setup program’s Boot menu.
The Desktop Board has two power connectors.
See Figure 19 on page 48 for the
location of the power connectors.
Fan Headers
The function/operation of the fans is as follows:
•
The fans are on when the board is in the ACPI S0 state.
•
The fans are off when the computer is in the ACPI S3, S4, or S5 state.
•
Each fan header is wired to a tachometer input.
•
All fan headers support closed-loop fan control that can adjust the fan speed or
switch the fan on or off as needed.
•
All fan headers have a +12 V DC connection.
•
All fan headers are controlled by Pulse Width Modulation.
•
The rear chassis fan header supports Linear Fan Control on 3-wire fans.
The Desktop Board has a 4-pin processor fan header and a 4-pin chassis fan header
that is compatible with 4-wire and 3-wire chassis fans.
LAN Wake Capabilities
CAUTION
For LAN wake capabilities, the 5 V standby line for the power supply must be capable
of delivering adequate +5 V standby current.
Failure to provide adequate standby
current when using this feature can damage the power supply.
LAN wakeup capabilities enable remote wake-up of the computer through a network.
The LAN subsystem monitors network traffic and upon detecting a Magic Packet*
frame, it asserts a wake-up signal that powers up the computer.